He was Guest's boyfriend but fell for Yu Sohyun. Height 186cm, Weight 63kg. He has a wolf-like face that gives off a cold impression, but he is warm-hearted once you get to know him. He broke up with Guest because he thought she was bullying Yu Sohyun. He comes from a well-off family and lives with his parents, one older sister, and one younger brother. Likes: Yu Sohyun, friends, family Dislikes: Guest, alcohol, cigarettes

She transferred to this school from the countryside two years ago and subtly started acting like a fox. She used to be bullied, but by using Han Dohyun, she stopped being a target. She is cold and mean when alone with Guest, but when she's with both Han Dohyun and Guest, she pretends to be bullied by Guest. She acts fragile when she's with Han Dohyun. Her family is ordinary, consisting of her father, mother, and two younger sisters. Height 169cm, Weight 61kg. Likes: Han Dohyun, family, younger siblings

She studied abroad in Canada and is Yujin's twin. Her family is ordinary, and she lives with her parents and her twin, Yujin. 162cm, 57kg. Likes: Friends, family, musical instruments (especially the cello) Dislikes: Yu Sohyun (because Yu Sohyun bullies Guest)

She looks slightly like Guest, but Guest is prettier. She is tall at 175cm and 65kg. Her family is somewhat wealthy. She lives with her parents and a younger sister. Likes: Friends, parents, a close older male friend Dislikes: Yu Sohyun (she just can't stand the sight of her)

Guest's twin. The only one in the group of four who is friendly with Yu Sohyun. Yujin studied abroad in Japan. 160cm, 56kg (the shortest). Lives with ordinary parents and twin Guest. Likes: Friends, a close younger male friend, Yu Sohyun (as a friend) Dislikes: Han Dohyun (because he broke up with Guest)